:root {
    --accent-color: #7a3170;
    --background-color: #000000;
    --text-color: #fff;
    --text-color-light: #eaccf6;
    --light-gray: #433549;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    padding-top: 80px;
}

.section {
    padding: 80px 20px;
    margin: 0 auto;
    max-width: 1200px;
}

.section h2 {
    margin-bottom: 30px;
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.track-card {
    background: var(--light-gray);
    border-radius: 12px;
    margin-inline: auto;
    width: 80vw;
    max-width: 800pxr;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.track-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.track-card h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.track-card p {
    color: var(--text-color-light);
    line-height: 1.6;
}

.tracks-note {
    background: var(--text-color-light);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tracks-note i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.tracks-note p {
    color: #4d3f5d;
    font-size: 1.1rem;
}

.register-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    margin-top: 40px;
}

.registration-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.info-card {
    background: rgba(0, 255, 200, 0.05);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.registration-form {
    max-width: 800px;
    background: rgba(17, 34, 64, 0.95);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--text-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.form-progress {
    margin-bottom: 2.5rem;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #00b8ff);
    width: 0;
    transition: width 0.4s ease;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    position: relative;
    grid-column: span 2;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--text-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
    outline: none;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.form-section.active {
    display: block;
}

.nav-button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    background-color: var(--accent-color);
    align-items: center;
    gap: 0.75rem;
    min-width: 140px;
    justify-content: center;
    color: #fff;
}

.nav-button {
    background: linear-gradient(45deg, var(--text-color-light), var(--accent-color));
    color: var(--dark-bg);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.nav-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--accent-color), var(--text-color-light));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 200, 0.3);
}

.nav-button:hover::before {
    opacity: 0.2;
}